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2 Sheets-Sheet 1. J. SUTER.. DOOR CHECK.

No. 522,091. Patented June 26. 1894.

(No Model.)

J. SUTER.V

DooR GHEOK.

Patented June 26, \1894.

/z AV/ W/TNESSES: 5

2 Shets-Sheet 2.

f UNITED STATES PATENT OFFICE.

JAcoB sUTER, oF NEW YORK, N. Y.

DooR-cHEcK.

SPEGIFIGATION forming part of Letters Patent No. 522,091, dated June 26, 1.894.

` Appiimion fiiea May 9, 1893. serial No. 473,500'. m modai.)

To all w/tom it may concern:

Be it known that I, JACOB SUTER, of the city, county, and State of New York, have invented a new and Improvedv Door-Check,

of which the following is a full, clear, and exact description. i

The object of the invention is to provide'a new and improved door check, which is simple and durable in construction, very effectro ive in Operation, designed to permit a partial i opening of the door for ventilating and other purposes, and arranged to lock the door securely in place in a closed condition whenever desired.

The invention consists of certain parts and details, and combinations of the same, as will be hereinafter described and then pointed out in the claims.

Reference is to be had to the accompanying zo drawings, forming a part of this-specification, in which similar letters of'referen'ce indicate corresponding parts in all the figures.

Figure 1 is a plan view of the improvement as applied, and with parts in section,the door being in a closed position. Fig. 2 is a plan view of'the improvement as applied with -the door partly open. Fig. 3 is a side elevation' of the improvementwith the door closed and locked in place. Fig. 4 is "a plan view of a modified form of the improvement as applied. `Fig. 5 is a side elevation of the same. Fig. 6 is a face view of the slide for the looking bar or foot. Fig. 7 is a plan View with parts in section, of another modified form of the improvement. Fig. 8 is a plan view of another modified form of the improvement; and Fig. 9 is a plan view with parts in section, of a further modified form of the improvement.

lThe improved door check is provided with a hinge plate A Secured to the door jamb B and. provided with a vertically-disposed pivot pin C, on which is mounted to Swing the arm D of a door bolt provided with an additional arm F connected by a pivot pin E with the arm D. The free end of the arm F of the articulated bolt is formed with a pivot G adapted to engage the slotted eye H formed on a check plate I Secured to the door J, near the edge thereof, directly opposite the hinge plate A. The pivot G is mounted to turn in the eye H and can also be removed therefrom when the door is in a closed position, by swinging the arm Fso as to disengage the pivot G at the end of the slot in the eye.

On the arm F and at the free end thereof is formed or Secured a looking bar K made in the shape of a foot standing at right angles to thearm F and adapted to abut on the check plate I, as plainly shown in Figs. l and 3. This looking bar K as shown in Fig. 8, is bifu rcated and is engaged at the fork by a screw L screwing in the check plate I, and arranged in such a manner that when the headof the screw stands horizontally the foot K swings readilyin or out, but when the screw is turned, so that the head stands vertically, as shown in Fig. 3, then the head extends across the V bifurcated end of the bar and consequently locks the latter in place, whereby the arm F is also locked in place, which locks the arm D so that the door J cannot be opened.

On the inner end of the arm F isv formed a` stop lug N adapted to pass onto the arm D when the door is opened and the articulated bolt is extended as plainly shown in Fig. 2. 75 When .the screw L stands in the position shown in Fig. 2, and the pivot G is engaged with the eye I I of the check plate I, then the door J can only be partly opened so as to permit of ventilating a room or permitting of viewing strangers outside of the door, or for other purposes, it being understood that the door will readily close, the arms D and F then swinging and closing the door to the position shown in Fig. 1.

When it is not desired to use the door check for Opening the door fully, then the arm F is swung outwardly in the direction of the arrow a', so as to disengage the pivot G from the slotted eye Hof the check plate I. The articulated bolt is then folded back onto the jamb B, and the door J can then Vbe opened or closed in the nsual manner.

As illustrated in Fig. 4, the looking bar K'`V is not formed integral with the bolt arm F, but 95 is a separate piece pivotally-connected with a slide O fitted to slide in a slot in the arm F' of the articulated door bolt. This bar K' is provided with a set screw P abutting on the arm F' at the time the door is closed, the said Ioo screw serving to prevent the lock bar from sliding on the plate I' in case of a heavy pressure against the door, and also to prevent accidental displacement of the bolt arm from the eye.

The looking bar K' is adapted to be locked to the check plate I' by a screw L' similar in construction to the screw L, shown and described relative to Figs. 1, 2 and 3. If desired a lock bar may be connected with the bolt arm D', as indicated in dotted lines in Fig. 4, the said lock bar then abutting at its inner end on a lugprojecting from the hinge plate A', the other end being fastened by a bolt to the arm D'. The door is then in a locked position.

As illnstrated in Fig. 7, a different form of eye II' is used for the check plate 12, the pivot G' of the arm F2 being changed correspondingly, but otherwise the construction is .the same as that shown in Fig. 4:, a separate lock bar K2 being employed instead of forming the lock bar integrally with the arm F2.

As shown in Fig. 8, still another form of articnlated bolt arm F3 is represented, the pivot G:2 of which engages an eye H2 on the check plate 13, while an independent lock bolt K3 is connected with the arm F3 by the slide O'.

As shown in Fig. 9, the lock bar K' is made segmental at its free end and is formed with teeth K5 adapted to en gage teeth I4 on the check plate 15, so as to secnrely hold the lock bar in place and to hold it adjustably On the check plate, according to the position of the door relative to Ithe jamb.

It is understood that a slide is used to connect the bolt arm with the lock bar, so that the device is readily adapted for doors not even at the inside With the jamb at the time the door is closed.

Having thns fully described my invention, I claim as new and desire to secure by Letters Patent- 1. A doorcheck, comprising two rigid arms pivotally connected with one another and the one pivoted to the door jamb, while the other is adapted for detachable pivotal connection with the door, a bar projected from the latter arm adjacent to the door and adapted to form a brace for the said arm, and means for locking the bar to the door, as and forthe purpose set forth.

2. A door check comprising a hinge plate fixed on the door jamb, a check plate for attachment to the door near the free edge thereof, an articulated bolt formed of two arms pivotally connected with each other, the said arms forming an acute angle the apex of which extends from the door when the latter is closed, and arranged approximately in alignment one with the other when the door is opened a vertically disposed pivot pin for connecting one of the said bolt arms with the i hinge plate, a second vertically disposed pivot integral With the other bolt arm and removably connected with the said check plate, a lock bar forming a brace for the said second bolt arm and connecting the latter with the said check plate and means for looking the brace bar to hold the door in place when the latter is in a closed position, substantially as described.

JACOB SUTER. VVitnesses:

F. W. IIANAFORD, E. M. CLARK. 

